Student learning toolCreated by: Champsedine Arevalo, MAN, RN, EMT
Block

1st Degree AV Block

Every P conducted, but PR > 200 ms. Usually benign.

LEAD II · 25 mm/s1° AVB

Characteristics

PR interval
> 200 ms, constant
Conduction
1:1

Common causes

  • Increased vagal tone
  • AV nodal drugs
  • Ischemia

ACLS treatment

  1. 1Usually none. Treat underlying cause.